package cn.tedu.jdbc;

import cn.tedu.Util.DBUtil;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCLogin {
    public static void main(String[] args) {
        try(Connection connection = DBUtil.getConnection()){
            //接受用户名和密码
            Scanner scanner = new Scanner(System.in);
            System.out.println("用户名：");
            String username = scanner.nextLine();
            System.out.println("密码：");
            String password = scanner.nextLine();
            //执行SQL
            Statement statement = connection.createStatement();
            String sql = "select nickname from userinfo " +
                    "where username = '" + username + "'and password = '" + password + "'";
            ResultSet r = statement.executeQuery(sql);
            //判断
            if(r.next()){
                String nickname = r.getString("nickname");
                System.out.println("登陆成功，欢迎您："+nickname);
            }else{
                System.out.println("用户名密码错误");
            }
        }catch (SQLException e){
            throw new RuntimeException(e);
        }
    }
}
